Windshield wiper and defroster



Feb. 25, 1947. 5 CORDOVA 2,416,572

WINDSHIELD WIPER AND DEFROSTER Filed May 11, 1944 2 Sheets-Sheet I nventor E 5 Y5 6 L .05 602800146,

Feb. 25, 1947. R. 1.. DE CORDOVA 2,416,572

WINDSHIELD WIPER AND DEFROSTER Filed May 11, 1944 2 Sheets-Sheet 2 Patented Feb. 25, 1947 UNITED STATES PATENT OFFICE 2 Claims. 1

This invention relates to new and useful improvements in windshield wipers and more particularly to a windshield wiper equipped with heating means for defrosting Windshields.

The principal object of the present invention 7 is to provide a combination heater and windshield wiper which will serve to prevent a windshield from freezing regardless of weather conditions.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 represents a perspective View of the assembly.

Figure 2 is an end elevation.

Figure 3 is a fragmentary elevational view with a portion in section showing one of the heating drums. v

Figure 4 is a section on the line 4-6 of Figure 3.

Figure 5 is a side elevational view of one of the heating units.

Figure 6 is a fragmentary side elevational view of the drum with the heating unit removed.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 generally refers to a windshield Wiper having a back element 6 and a squeegee I. The back 6 is attached as at 8 to an operating arm 9.

The yokes M are provided at the ends of the back 6 and embrace the back in such a manner as to hold a pair of heating drums H, H in close spaced relation with respect to the opposite sides of the squeegee 1.

Each of these drums II consists of a shell or drum I2, closed at one end excepting for a small opening and provided with external threads at its opposite end to accommodate an internally threaded cap 13 which has a small opening l4 therein.

Inside of the drum I2 is a heating unit consisting of an elongated barrel I5 having a pin [6 projecting from one end and disposed through the opening in one end of the drum l2 while its opposite end has a threaded plug I! with a hollow pin [8 projecting therefrom, the pin [8 pro jecting through the opening l4 in the cap 13. The pins l6, [8 are disposed into the loops 20 at the ends of the yokes It) as shown in Figure 1.

Inside of the barrel l5, the side walls are formed with longitudinal grooves 2| for slidably receiving the edge portions of an elongated strip 22 of insulation on which is wound a heat wire 23,'which when energized heats the entire drum structure, with the result that heat radiates therefrom onto a squeegee l and on to the adjacent windshield (not shown).

Ball hearings or the like 24 are interposed between the cap I3 and the plug 11 and like bearings may be provided between the opposite end of the barrel l5 and the adjacent end of the drum I2. The ends of the wire 23 (properly insulated) are led through openings in the ends of the hollow pins [8 and can extend into a suitable conduit 25 leading to a switch and source of current (not shown).

Obviously, as the assembly moves back and 'forth on a windshield, not only will the windfrom the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. A combinedwindshield wiper and defroster comprising a conventional motor driven movable wiper, yokes at the ends of the wiper, hollow closed heat radiating fixed cylinders provided .with projecting trunnions supported by said yokes, on both sides of the wiper, closed cylindrical rollers covering said cylinders and supported for rotation on the same, an electric heat radiating unit within the hollow cylinders for heating the same by radiation and means for supplying said heating unit with current. V 2. A combined windshield wiper and defroste comprising a conventional motor driven movable Wiper unit, yokes at the ends of said wiper, hollow closed heat radiating cylinders supported by said yokes, on both sides of said wiper, rotatable rollers closely surrounding said hollow cylinders, said rollers being adapted to roll on the surface of the windshield, ball bearings supporting said ,rollers for rotation on said cylinders, 21. flatheat- STATES PATENTS ing unit including a base and a heating Wire 2116- Nmnber Name 9 Date 7 ranged within each of said cylinders, and adapted 607093 Snow July 12, 1898 to heat the enclosing closed hollow cylinder by '2034380 sackett a 24 3 radiation and means for supplying current to 5 1,980,590 Knight NW 13, 1934 said wires. 6 1,790,544 Hoover Jan. 27, 1931 REYES DE CORDOVA- 1,596,181 Hills Aug. 17, 1926 1,640,887 Davis Aug. 30, 1927 REFERENCES CITED 1,665,950 Dwyer et a1 Apr. 10, 1928 The followingreferences are of record in the 1,845,465 Wickstrom Feb. 16, 1932 file of this patent: 

